DE238246C - - Google Patents

Info

Publication number
DE238246C
DE238246C DENDAT238246D DE238246DA DE238246C DE 238246 C DE238246 C DE 238246C DE NDAT238246 D DENDAT238246 D DE NDAT238246D DE 238246D A DE238246D A DE 238246DA DE 238246 C DE238246 C DE 238246C
Authority
DE
Germany
Prior art keywords
chisel
attached
well drilling
movement
bit according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DENDAT238246D
Other languages
German (de)
English (en)
Publication of DE238246C publication Critical patent/DE238246C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
DENDAT238246D Active DE238246C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE238246C true DE238246C (enrdf_load_html_response)

Family

ID=497784

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT238246D Active DE238246C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE238246C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102413A (en) * 1976-08-30 1978-07-25 Frederick Eric Johnston Rock drilling apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102413A (en) * 1976-08-30 1978-07-25 Frederick Eric Johnston Rock drilling apparatus and method

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